diff --git a/Dockerfile b/Dockerfile
index 8939f68..bf55561 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM node:18
 
 ENV DOCKER true
-ENV PORT=3000
+ENV PORT 3000
 ENV DOMAIN http://localhost:3000
 ENV DB_TYPE json
 ENV DB_HOST 127.0.0.1
@@ -13,4 +13,4 @@ COPY package*.json ./
 RUN npm install
 COPY . .
 EXPOSE 3000
-CMD [ "node", "app.js", "${PORT}" ]
\ No newline at end of file
+CMD [ "node", "app.js" ]
\ No newline at end of file